The first thing to do is tell your tenant in writing to immediately remove it as it is not safe. If he doesn’t comply, you can then give a notice, in this case a Form N7 – Notice to End Your Tenancy for Causing Serious Problems in the Rental Unit or Residential Complex. After serving this notice, which is a 10 days’ notice, you can then file an application with the Landlord and Tenant Board to have a hearing. The Board may expedite the process if the issues are of an urgent matter.